Annals of the South African Museum, Volume 45The Museum, 1960 - Natural history |
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Page 429
... occlusal plane is angulated at 20 ° to the occlusal plane of the pillars . Occlusal surface . The central pits of the anterior and posterior pillars are still visible . M2 Buccal surface . The buccal portion of the posterior pillar and ...
... occlusal plane is angulated at 20 ° to the occlusal plane of the pillars . Occlusal surface . The central pits of the anterior and posterior pillars are still visible . M2 Buccal surface . The buccal portion of the posterior pillar and ...
Page 430
South African Museum. Occlusal surface . The tooth is in early wear which is most marked along the anterior portion of the protoconid . The central pits are V - shaped , their hollowed portions being continuous with each other in the ...
South African Museum. Occlusal surface . The tooth is in early wear which is most marked along the anterior portion of the protoconid . The central pits are V - shaped , their hollowed portions being continuous with each other in the ...
Page 452
... surface and that of the central pit . On each occlusal surface can be seen striations which in some places are almost distinct scratches indicating a side- to - side chewing movement of the jaws . The shape of the enamel of the lingual ...
... surface and that of the central pit . On each occlusal surface can be seen striations which in some places are almost distinct scratches indicating a side- to - side chewing movement of the jaws . The shape of the enamel of the lingual ...
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Common terms and phrases
1st whorl 2nd whorl 3rd whorl 4th whorl additional lirae Algoa Bay antennae anteriorly aperture apex axial ribs Bartsch body whorl brown Buccal surface callus camelopardalis Cape Cape Natal capensis central pit central plate cingulum cirri cirrus columella Conch cusps denticles diam distal dorsal cirri Durban elytra enamel False Bay fathoms Fauvel Giraffa groove Holotype horn-core hypocone juveniles knobs last whorl later whorls lateral plate length lingual surface M₁ mandible Martens median mesostyle metres molar Museum Natal Occlusal surface Olduvai Operculum outer lip P.F. coll pale parapodium parietal callus periostracum plicate Port Alfred posterior pillar Postnatal whorls Proc prostomium protoconch Protoconch 2 whorls radula Records root rows rugose segments setae setiger setigerous lobe shell Sivatherium slightly Smith smooth South African Sowerby species specimens spiral lirae spiral striae spire suture talonid teeth Thiele Tiefsee Exp Tomlin tooth Turton upper Zool